Sean Gammons specializes in the gas and power sectors. He has more than 20 years of experience advising energy companies and regulators on the design and operation of gas and electricity markets. His experience includes regulatory work on market rules, tariff design, and antitrust enforcement (such as merger approval and state aid), as well as commercial work on contract design, pricing, investment appraisal, and risk management. Mr. Gammons has led a large number of due diligence and valuation exercises in support of M&A transactions, greenfield investment, and financings in the UK, Europe, Middle East, North Africa, and Asia, covering deregulated, regulated, and hybrid (low-carbon) segments of the energy industry.
Examples of his advisory assignments include:
Mr. Gammons is also an experienced expert witness who has provided expert testimony in cases covering contractual disputes (construction, sale and purchase, M&A, and broker disputes, among others), antitrust matters, and energy industry regulation in a wide range of jurisdictions around the world, including the International Centre for Settlement of Investment Disputes (ICSID), the International Chamber of Commerce, and the English High Court. Examples of his expert work include:
Mr. Gammons is recommended as a leading energy expert by Who's Who Legal (2019–2023) and lauded as an expert with a “wealth of experience in the energy sectors, spanning regulatory work in market rules, tariff design, and antitrust enforcement.” Mr. Gammons is praised for his “great analytical skills” and his “very good command of the legal aspects of the case.”
In Who’s Who Legal: Energy Experts 2023, Mr. Gammon’s clients recognized: